This study aims to analyze the influence of peer interactions, achievement motivation, and study habits on student Grade Point Average (GPA) in a persistent and simultaneous manne. This research was carried out in the UNESA economic education department. The population in this study was a class of 322 students of economic education majoring in 2016 and 178 samples determined by using simple random sampling technique. Data collection techniques by means of documentation and questionnaires with data analysis used are multiple linear regression. The results of this study show that peer interaction has a positive and significant effect on GPA of 0,000, achievement motivation has a positive effect but has no significant effect on GPA of 0.218, and learning habits have a positive and significant effect on GPA of 0,000. While the results of the study simultaneously showed that peer interaction, achievement motivation, and learning habits had a significant effect on GPA of 0,000 with a determination coefficient of 0.245
Keywords: Peer Interactions, Achievement Motivation, Learning Habits, GPA